What is the difference between the MG7540 and MG7550?

WHAT IS THE DIFFERENCE BETWEEN THE MG7540 AND MG7550?

The main difference between the MG7540 and the MG7550 is that the MG7550 includes Wireless PowerBoost and AnyBeam Beamforming.

MG7540: 16x4 Cable Modem plus AC1600 Dual Band Wi-Fi

MG7550: 16x4 Cable Modem plus AC1900 Dual Band Wi-Fi 
                with Power Boost and AnyBeam

                      BEST proven WiFi

Wireless Power Boost adds high-performance Wi-Fi power amplifiers to boost the wireless signals to the legal limit.  This gives a significant boost in speed and range.

AnyBeam Beamforming focuses the signal (both 2 GHz and 5 GHz frequencies) on wireless clients to further enhance performance and range.

Instead of broadcasting a signal to a wide area, hoping to reach your target, it concentrates the signal and aims it directly at the target!

Beamforming can increase a wireless network’s range. This can improve video streaming, voice quality, and other bandwidth-sensitive transmissions.

How does Beamforming work?
Wireless routers/access points/wireless adapters that don’t support beamforming broadcast data equally in all directions. 

Beamforming focuses their signals toward each wireless client, so that more data reaches the targeted device instead of radiating out into your house.

Think of putting a shade on your lamp (the wireless router) to reduce the amount of light (data) radiating in all directions. Then poke holes in the shade, so that concentrated beams of light travel to defined locations (your Wi-Fi clients:  iPhone, iPad, Android, Smart TV, Gaming console, laptop, etc.) in the room.

If the Wi-Fi client also supports beamforming, the router and Wi-Fi client will "talk to eachother" - exchange information about their exact locations in order to determine the best signal path!